Can Mokele-mbembe Bichir and Motoro Stingray Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 7, 2026
Possible with Caution

Keeping Mokele-mbembe Bichir and Motoro Stingray together is possible but requires caution due to mismatched flow preferences. Provide a spacious tank of at least 750 litres with plenty of hiding spots to reduce stress. Monitor behaviour closely, especially during the first few weeks.


At a Glance

Mokele-mbembe Bichir

Polypterus mokelembembe

Motoro Stingray

Potamotrygon motoro

🐟Family Group
Mokele-mbembe Bichir
Oddballs
Motoro Stingray
Oddballs
Temperament
Mokele-mbembe Bichir
Semi-Aggressive (6/10)
Motoro Stingray
Semi-Aggressive (5/10)
Temperature
✓ Compatible
Mokele-mbembe Bichir
24–28°C
Motoro Stingray
24–28°C
pH Range
✓ Compatible
Mokele-mbembe Bichir
6.5–7.5
Motoro Stingray
6–7.5
Hardness (dGH)
✓ Compatible
Mokele-mbembe Bichir
5–19
Motoro Stingray
2–10
Water Type
✓ Compatible
Mokele-mbembe Bichir
Freshwater Only
Motoro Stingray
Freshwater Only
Flow Preference
✗ No overlap
Mokele-mbembe Bichir
Low
Motoro Stingray
High
Min Tank Volume
Combined: 750 L
Mokele-mbembe Bichir
200 L
Motoro Stingray
750 L
Swimming Level
Shared: 1 zone
Mokele-mbembe Bichir
Bottom
Motoro Stingray
Bottom
🏷️Behavior Tags
Mokele-mbembe Bichir
Piscivore (Eats small/nano fish)Shrimp EaterFry PredatorJumper (Lid Required)Nocturnal
Motoro Stingray
Piscivore (Eats small/nano fish)Shrimp EaterSnail EaterFry PredatorDigger (Disturbs Substrate)
Stocking calculator

Can your tank handle Mokele-mbembe Bichir and Motoro Stingray?

Compatibility is only part of the answer. Test both fish with your real tank size, current stock, and maintenance needs to see if you have enough space and a safe stocking level before you add them.

Mokele-mbembe Bichir
Motoro Stingray
Test both in my tank

Behaviour & Temperament

Mokele-mbembe Bichir is a moderately assertive species (6/10), while Motoro Stingray is moderately assertive (5/10). This modest difference means Mokele-mbembe Bichir may occasionally assert dominance over Motoro Stingray.

Mokele-mbembe Bichir and Motoro Stingray both frequent the Bottom (Substrate) region of the setup. This overlap can increase competition for space, so providing ample room and cover is important to keep both species comfortable.

Worth noting: Mokele-mbembe Bichir is nocturnal and will be most active after lights-out, naturally reducing daytime encounters. Also, Mokele-mbembe Bichir is a known jumper, so a tight-fitting lid is essential.

Water Parameters

The safe temperature window for both species falls between 24°C and 28°C. Aim for the midpoint of this range (around 26.0°C) for optimal comfort.

Both fish can tolerate a pH between 6.5 and 7.5. Maintaining a stable value within this band is more important than hitting an exact number.

For general hardness, the shared comfort zone is 5–10 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Mokele-mbembe Bichir and Motoro Stingray together, plan for an aquarium of at least 750 litres with a minimum length of 180 cm. This recommendation combines the stricter species minimums with a community-load allowance so the pairing has realistic long-term space and filtration headroom.

Because this pairing requires extra vigilance, include plenty of hiding spots — caves, driftwood, and dense plant clusters — so the less dominant fish can retreat when needed.

Specific environmental needs for this combination include: Sand (Sifters), Smooth Gravel (Sensitive Barbels), Driftwood (Digestion/Hiding), Plants - Densely covered. Meeting these requirements will help both species thrive.

Mokele-mbembe Bichir prefers Low (Still Water) flow while Motoro Stingray needs High (River/Stream) flow. Consider positioning filter outlets and using baffles to create zones of different current intensity within the same tank.

Why This Pairing Needs Extra Planning in Practice

This pairing usually fails when the tank is treated like a standard mixed community and the caution flags are ignored. Mokele-mbembe Bichir and Motoro Stingray need extra room, more cover, and closer observation during the first few weeks so small aggression, feeding, or territory issues do not snowball into a long-term problem.

Frequently Asked Questions

Can Mokele-mbembe Bichir and Motoro Stingray live together?

They can coexist, but the pairing requires careful monitoring. Provide ample space (at least 750 litres), plenty of hiding spots, and watch for signs of stress or aggression.

What size tank do Mokele-mbembe Bichir and Motoro Stingray need?

A minimum of 750 litres (tank length at least 180 cm) is recommended. This provides enough space for both species to establish their own areas and reduces the likelihood of territorial disputes.

What water temperature is best for Mokele-mbembe Bichir and Motoro Stingray together?

Keep the aquarium between 24°C and 28°C. A target of around 26.0°C sits comfortably within both species' preferred ranges.

Are Mokele-mbembe Bichir or Motoro Stingray aggressive?

Mokele-mbembe Bichir is moderately assertive (6/10) and Motoro Stingray is moderately assertive (5/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Mokele-mbembe Bichir and Motoro Stingray need?

Both species overlap in the 6.5–7.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.

Does Mokele-mbembe Bichir being nocturnal affect compatibility?

Mokele-mbembe Bichir is most active after lights-out, which naturally reduces daytime encounters with its tank mate. This can actually be beneficial, as both fish get undisturbed time to feed and explore. Just ensure food reaches Mokele-mbembe Bichir during evening hours.

Editorial Review

Guidarium Editorial Desk

Reviewed against Guidarium care, stocking, and compatibility standards. Read the editorial policy.

Last reviewed
May 7, 2026
Last updated
May 7, 2026
Issues or corrections?
Contact the editorial team

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